UIViewRoot skips uncorrectly encodeBegin

javax.faces.component.UIViewRoot.encodeBegin(FacesContext) contains:

if (!skipPhase) {
super.encodeBegin(context);
}

but skipPhase = context.getRenderResponse() || context.getResponseComplete() - it
makes sense for all phases except render response phase itself. That condition
probably should be:

if (!context.getResponseComplete()) {
super.encodeBegin(context);
}